CN102842767B - Microstructure, metamaterial plate and antenna system - Google Patents
Microstructure, metamaterial plate and antenna system Download PDFInfo
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- CN102842767B CN102842767B CN201210268606.4A CN201210268606A CN102842767B CN 102842767 B CN102842767 B CN 102842767B CN 201210268606 A CN201210268606 A CN 201210268606A CN 102842767 B CN102842767 B CN 102842767B
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Abstract
The invention provides a metamaterial plate and an antenna system. The metamaterial plate comprises a layer or multiple layers of base materials, wherein same microstructures are periodically distributed on the two opposite side surfaces of each layer of base material, the topological pattern of the microstructure takes a central point as a rotation point and rotates for 90 degrees along the clockwise structure or the counterclockwise direction to obtain a new topological pattern which is overlapped with the conventional topological pattern; and each microstructure comprises a first basic structure and a second basic structure, wherein the second basic structure is obtained by rotating the first basic structure for 90 degrees along the clockwise direction by taking a central point of a second metal branch as a rotation point. The antenna system comprises a feed source and the metamaterial plate arranged on the path of electromagnetic wave radiated by the feed source. According to the metamateiral plate and the antenna system, by designing the topological shape and/or size of the microstructure of the metamaterial, the electromagnetic wave radiated by the feed source is converted to be two bundles to be radiated without changing the feed source in the antenna system, so that the wave separating function is realized.
Description
Technical field
The present invention relates to Meta Materials technical field, particularly relate to a kind of micro-structural, metamaterial board and antenna system.
Background technology
Light, as electromagnetic one, it is when passing glass, because the wavelength of light is much larger than the size of atom, therefore we can use the univers parameter of glass, such as refractive index, instead of the details parameter of the atom of composition glass describes the response of glass to light.Accordingly, when research material is to other electromagnetic responses, in material, any yardstick also can with the univers parameter of material to electromagnetic response much smaller than the structure of electromagnetic wavelength, and such as DIELECTRIC CONSTANT ε and magnetic permeability μ describe.The structure often put by designing material makes the dielectric constant of material each point and magnetic permeability all identical or different, thus make the dielectric constant of material monolithic and magnetic permeability be certain rule arrangement, magnetic permeability and the dielectric constant of rule arrangement can make material have response macroscopically to electromagnetic wave, such as, converge electromagnetic wave, divergent electromagnetic ripple, electromagnetic wave absorption etc.The material of such magnetic permeability and dielectric constant with rule arrangement is referred to as Meta Materials.
As shown in Figure 1, Fig. 1 is the perspective view of the elementary cell of existing formation Meta Materials.The elementary cell of Meta Materials comprises the base material 200 of snowflake type man-made microstructure 100 and the attachment of this man-made microstructure.Snowflake type man-made microstructure can be artificial metal's micro-structural, and it can produce response to change each Meta Materials elementary cell to the response of incident electromagnetic wave to incident electromagnetic wave electric field and/or magnetic field.Multiple Meta Materials elementary cell arranges according to certain rules, and Meta Materials can be made to have the response of macroscopic view to electromagnetic wave.Because Meta Materials entirety need have macroscopical electromagnetic response to incident electromagnetic wave, therefore each Meta Materials elementary cell need form continuous response to the response of incident electromagnetic wave, this requires that the size of each Meta Materials elementary cell is less than incident electromagnetic wave 1/5th wavelength, is preferably incident electromagnetic wave 1/10th wavelength.During this section describes, Meta Materials entirety being divided into multiple Meta Materials elementary cell is a kind of man-made division method, but should know that this kind of division methods is only for convenience of description, should not regard Meta Materials as spliced by multiple Meta Materials elementary cell or assemble, in practical application, Meta Materials artificial metal's micro-structural is arranged on base material and can forms, and technique is simple and with low cost.
The micro-structural topology of Meta Materials and/or size change Meta Materials to the important parameter of electromagnetic electromagnetic response.The micro-structural topology of existing Meta Materials is too simple, and single to electromagnetic response, purposes is less.
Summary of the invention
Technical problem to be solved by this invention is, for the above-mentioned deficiency of prior art, propose a kind of metamaterial board, described metamaterial board comprises one or more layers base material, and relative to both side surface, the cycle is placed with identical micro-structural to every layer of base material respectively; Described micro-structural topology pattern with its central point for the point of rotation, the new topological pattern along clockwise direction or counterclockwise obtained after half-twist and former topological pattern registration; Described micro-structural comprises the first basic structure and the second basic structure, and described first basic structure comprises and equidistantly be arrangeding in parallel and equal the first metal branch, the second metal branch and the 3rd metal branch of length; Second metal branch one end end points and the first metal branch homonymy end points are interconnected to form the 4th metal branch, described 4th metal branch is perpendicular to the first metal branch and the second metal branch, second metal branch other end end points and the 3rd metal branch homonymy end points are interconnected to form the 5th metal branch, and described 5th metal branch is perpendicular to the second metal branch and the 3rd metal branch; Described second basic structure for by the first basic structure with the second metal branch central point for point of rotation clockwise direction half-twist obtains.
Further, described first metal branch is identical with the 3rd metal branch live width, and it is identical that described 4th metal branch and five metals belong to branch's live width.
Further, described first metal branch live width is greater than the 4th metal branch live width, and described 4th metal branch live width is greater than the second metal branch live width.
Further, described first metal branch length is 10 to 13 millimeters, and the first metal branch live width is 1.5 to 2.0 millimeters; Described second metal branch live width is 0.8 to 1.2 millimeter, and described 4th metal branch length is 8 to 9 millimeters, and described 4th metal branch live width is 1.3 to 1.5 millimeters.
Further, the dielectric constant of described base material when 10GHZ is 4.0 to 5.0.
Further, described base material is FR-4 material, F4B material, PS material or ceramic material.
The present invention also provides a kind of antenna system, and it comprises feed and is arranged at the above-mentioned metamaterial board on described feed electromagnetic radiation wave path.
Further, described feed is paster antenna, microstrip antenna or horn antenna.
Further, described metamaterial board comprises 3 layers of base material, and every layer of base material thickness is 0.3 to 0.5 millimeter.
Further, the vertical range of described metamaterial board and described feed is 4.5 to 10.5 millimeters.
The present invention, by the design micro-structural topology of Meta Materials and/or size, makes the feed in antenna system the electromagnetic wave of feed radiation can be converted into two bundle electromagenetic wave radiations go out without the need to making any change, realizes the function that wave beam is separated.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing formation Meta Materials elementary cell;
Fig. 2 is the perspective view of metamaterial board of the present invention;
Fig. 3 is the schematic diagram that the topological structure of the identical micro-structural that in Fig. 2, metamaterial board is adhered to relative to both side surface and this topological structure are decomposed into the first basic structure and the second basic structure;
When Fig. 4 is paster antenna additional metamaterial board, phi is the simulation result schematic diagram of 0 °;
When Fig. 5 is paster antenna additional metamaterial board, phi is the simulation result schematic diagram of 90 °;
The far gain figure that Fig. 6 is metamaterial board and paster antenna vertical range when being 1.5 millimeters;
The far gain figure that Fig. 7 is metamaterial board and paster antenna vertical range when being 4.5 millimeters;
The far gain figure that Fig. 8 is metamaterial board and paster antenna vertical range when being 7.5 millimeters;
The far gain figure that Fig. 9 is metamaterial board and paster antenna vertical range when being 105 millimeters.
Embodiment
Please refer to Fig. 2, Fig. 2 is the perspective view of metamaterial board of the present invention.Described metamaterial board comprises one or more layers base material, and every layer of base material is placed with identical micro-structural respectively relative to both side surface.In Fig. 2, because base material thickness is thinner, so in figure, each layer micro-structural seems is directly be superimposed, but in reality between two-layer micro-structural between be separated with one deck base material.
The choosing of substrate material can be diversified, and the dielectric constant normally calculating base material when designing then chooses the material with this dielectric constant in current material, or configuration has the material of this dielectric constant voluntarily.In the present embodiment, the dielectric constant of base material is preferably 4.0 to 5.0 when 10GHZ.The dielectric constant of base material choose can according to environment for use and metamaterial board respond the difference of wave frequency and different.
Substrate material can choose all kinds of material with above-mentioned dielectric constant, such as FR-4 material, F4B material, PS material, ceramic material etc.
Please refer to Fig. 3, Fig. 3 is the schematic diagram that the topological structure of the identical micro-structural that in Fig. 2, metamaterial board is adhered to relative to both side surface and this topological structure are decomposed into the first basic structure and the second basic structure.Micro-structural is made up of the first basic structure 10 and the second basic structure 20.First basic structure 10 comprises and equidistantly be arrangeding in parallel and equal the first metal branch 11, second metal branch 12, the 3rd metal branch 13 of length; Second metal branch 12 one end end points and the first metal branch homonymy end points are interconnected to form the 4th metal branch 14, and the 4th metal branch 14 is respectively perpendicular to the first metal branch 11 and the second metal branch 12; Second metal branch 12 other end end points and the 3rd metal branch homonymy end points are interconnected to form the 5th metal branch 15, and the 5th metal branch 15 is respectively perpendicular to the second metal branch 12 and the 3rd metal branch 13.
Second basic structure 20 be by by the first basic structure with the second metal branch 12 central point for point of rotation clockwise direction half-twist obtains.Due to the special shape of the first basic structure 20, the second basic structure 20 with the second metal branch 12 central point for the point of rotation counterclockwise half-twist also can obtain the second identical basic structure 20.
Due to the special shape of the first basic structure 10 and the second basic structure 20, the micro-structural be made up of the first basic structure 10 and the second basic structure 20 with its central point for the point of rotation, the new topological pattern along clockwise direction or counterclockwise obtained after half-twist and former topological pattern registration.The micro-structural with this class feature is isotropic microstructures, and isotropic microstructures all has identical electromagnetic response to the electromagnetic wave of all directions incidence, can simplified design and improve range of application.
Preferably, the first metal branch 11 and the 3rd metal branch 13 have identical live width, and the 4th metal branch 14 and the 5th metal branch 15 have identical live width.First metal branch 11 live width is greater than the 4th metal branch 14 live width, and the 4th metal branch 14 live width is greater than the second metal branch 12 live width.
More preferably, the first metal branch 11 length is 10 to 13 millimeters, and the first metal branch 11 live width is 1.5 to 2.0 millimeters; Second metal branch 12 live width is 0.8 to 1.2 millimeter, and the 4th metal branch 14 length is 8 to 9 millimeters, and the 4th metal branch 14 live width is 1.3 to 1.5 millimeters.
It is different and different that the live width of each strip metal branch and length respond electromagnetic frequency according to it, and such as, when its response wave frequency is higher, then electromagnetic wavelength is longer, and correspondingly, each strip metal branch length is longer; When its response wave frequency is lower, then electromagnetic wavelength is shorter, and correspondingly, each strip metal branch length is shorter.
The material of micro-structural can be all kinds of conducting metals such as copper, silver, aluminium.
The present invention also provides a kind of antenna system, and it comprises feed and is arranged at the above-mentioned metamaterial board on feed electromagnetic radiation wave path.Feed can be the device of all kinds of energy such as paster antenna, microstrip antenna, horn antenna radiated electromagnetic wave.In the present embodiment, illustrate for paster antenna.
Metamaterial board in the antenna system of the present embodiment comprises 3 layers of base material be made up of FR-4 material.The thickness of every layer of base material is 0.2 to 0.5 millimeter, and the thickness of micro-structural is 0.01 to 0.02 millimeter.Whole metamaterial board thickness is less than 2 millimeters, and very thin thickness, takes up room very little.
After choosing a paster antenna below to illustrate interpolation metamaterial board, the electromagnetic wave of aerial radiation is divided into the effect of two bundles.In the present embodiment, paster antenna volume is 41.95 × 41.95 × 1.96mm, and dead ahead circle paster circumference is 12.87mm, and radiated electromagnetic wave frequency is 3.43GHZ.During the additional metamaterial board of paster antenna, it utilizes CST simulation software emulate the front gain maximum obtained is 3.58dB, and paster antenna additional metamaterial board time its phi be that the polar of 0 ° and 90 ° schemes to distinguish as shown in Figure 4, Figure 5.As can be seen from Figure 4, when paster antenna does not add metamaterial board, half-power bandwidth when phi is 0 ° is 80.4 °, and as can be seen from Figure 5, when paster antenna does not add metamaterial board, half-power bandwidth when phi is 90 ° is 99.9 °
Paster antenna electromagnetic radiation wave path adding above-mentioned metamaterial board, obtaining more preferably parameter by choosing the metamaterial board vertical range different from paster antenna.
Please refer to Fig. 6, Fig. 6 is the far gain figure when metamaterial board and paster antenna vertical range are 1.5 millimeters.As can be seen from Figure 6, after adding metamaterial board, the electromagnetic front gain of paster antenna radiation increases to 4.2dB, but is not significantly separated electromagnetic effect.
Please refer to Fig. 7, Fig. 7 is the far gain figure when metamaterial board and paster antenna vertical range are 4.5 millimeters.As can be seen from Figure 7, add after metamaterial board, the electromagnetic front gain of paster antenna radiation increases to 4.1dB, and electromagnetic wave is tentatively separated into two bundle electromagnetic waves of about 30 ° and about 30 °, right front towards left front respectively.
Please refer to Fig. 8, Fig. 8 is the far gain figure when metamaterial board and paster antenna vertical range are 7.5 millimeters.As can be seen from Figure 8, after adding metamaterial board, the electromagnetic front gain of paster antenna radiation is decreased to 3.3dB, but electromagnetic wave is separated into two bundle electromagnetic waves significantly, and the electromagnetic radiation direction of two bundles is about 41 °, left front and about 41 °, right front.
Please refer to Fig. 9, Fig. 9 is the far gain figure when metamaterial board and paster antenna vertical range are 10.5 millimeters.As can be seen from Figure 9, add after metamaterial board, the electromagnetic front gain of paster antenna radiation is decreased to 1.1dB, and electromagnetic wave is separated into two bundle electromagnetic waves of about 50 ° and about 50 °, right front towards left front respectively.
From Fig. 6 to Fig. 9, when metamaterial board being added on feed, metamaterial board is nearer apart from feed distance, then the front gain increase of feed radiated electromagnetic wave but the reduction of partial wave effect; Along with the increase of metamaterial board and feed distance, the gain reduction of electromagnetic front but partial wave effect strengthen.Therefore, according to the characteristic and application demand of different feed radiated electromagnetic wave, regulate the distance of metamaterial board and feed to meet the demands.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, also can make a lot of form, these all belong within protection of the present invention.
Claims (10)
1. a metamaterial board, is characterized in that: described metamaterial board comprises one or more layers base material, and relative to both side surface, the cycle is placed with identical micro-structural to every layer of base material respectively; Described micro-structural topology pattern with its central point for the point of rotation, the new topological pattern along clockwise direction or counterclockwise obtained after half-twist and former topological pattern registration; Described micro-structural comprises the first basic structure and the second basic structure, and described first basic structure comprises and equidistantly be arrangeding in parallel and equal the first metal branch, the second metal branch and the 3rd metal branch of length; Second metal branch one end end points and the first metal branch homonymy end points are interconnected to form the 4th metal branch, described 4th metal branch is perpendicular to the first metal branch and the second metal branch, second metal branch other end end points and the 3rd metal branch homonymy end points are interconnected to form the 5th metal branch, and described 5th metal branch is perpendicular to the second metal branch and the 3rd metal branch; Described second basic structure for by the first basic structure with the second metal branch central point for point of rotation clockwise direction half-twist obtains; The material of described micro-structural is conducting metal.
2. metamaterial board as claimed in claim 1, it is characterized in that: described first metal branch is identical with the 3rd metal branch live width, it is identical that described 4th metal branch and five metals belong to branch's live width.
3. metamaterial board as claimed in claim 2, it is characterized in that: described first metal branch live width is greater than the 4th metal branch live width, described 4th metal branch live width is greater than the second metal branch live width.
4. metamaterial board as claimed in claim 3, is characterized in that: described first metal branch length is 10 to 13 millimeters, and the first metal branch live width is 1.5 to 2.0 millimeters; Described second metal branch live width is 0.8 to 1.2 millimeter, and described 4th metal branch length is 8 to 9 millimeters, and described 4th metal branch live width is 1.3 to 1.5 millimeters.
5. metamaterial board as claimed in claim 1, is characterized in that: the dielectric constant of described base material when 10GHZ is 4.0 to 5.0.
6. metamaterial board as claimed in claim 5, is characterized in that: described base material be FR ?4 materials, F4B material, PS material or ceramic material.
7. an antenna system, is characterized in that: comprise feed and the metamaterial board as described in claim 1 to any one of claim 6, and described metamaterial board is arranged on described feed electromagnetic radiation wave path.
8. antenna system as claimed in claim 7, is characterized in that: described feed is paster antenna, microstrip antenna or horn antenna.
9. antenna system as claimed in claim 7, it is characterized in that: described metamaterial board comprises 3 layers of base material, every layer of base material thickness is 0.3 to 0.5 millimeter.
10. antenna system as claimed in claim 7, is characterized in that: the vertical range of described metamaterial board and described feed is 4.5 to 10.5 millimeters.
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| CN103682655B (en) * | 2012-08-31 | 2017-07-28 | 深圳光启创新技术有限公司 | Micro-structural, metamaterial board and antenna system |
| CN103367881A (en) * | 2013-07-16 | 2013-10-23 | 北京邮电大学 | High-gain G-shaped dual-frequency monopole antenna with loaded dual-frequency AMC reflection plate |
| CN106410395A (en) * | 2016-09-19 | 2017-02-15 | 四川大学 | Metamaterial rectification surface |
| CN106299627B (en) * | 2016-10-18 | 2023-06-02 | 京东方科技集团股份有限公司 | Liquid crystal antenna and communication equipment |
| CN112542685B (en) * | 2020-12-18 | 2021-11-02 | 北京大学 | Microwave and terahertz wave all-metal hyperbolic metamaterial antenna and implementation method thereof |
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| CN202150533U (en) * | 2011-07-29 | 2012-02-22 | 深圳光启高等理工研究院 | Resonant cavity |
| CN102480027A (en) * | 2011-07-26 | 2012-05-30 | 深圳光启高等理工研究院 | Offset-feed type satellite television antenna and satellite television receiving system thereof |
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| US8271241B2 (en) * | 2005-01-18 | 2012-09-18 | University Of Massachusetts Lowell | Chiral metamaterials |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102480027A (en) * | 2011-07-26 | 2012-05-30 | 深圳光启高等理工研究院 | Offset-feed type satellite television antenna and satellite television receiving system thereof |
| CN202150533U (en) * | 2011-07-29 | 2012-02-22 | 深圳光启高等理工研究院 | Resonant cavity |
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Effective date of registration: 20210413 Address after: 2 / F, software building, No.9, Gaoxin Zhongyi Road, Nanshan District, Shenzhen City, Guangdong Province Patentee after: KUANG-CHI INSTITUTE OF ADVANCED TECHNOLOGY Address before: 18B, building a, CIC international business center, 1061 Xiangmei Road, Futian District, Shenzhen, Guangdong 518034 Patentee before: KUANG-CHI INNOVATIVE TECHNOLOGY Ltd. |
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